
from flask.ext.wtf import Form, FlaskForm
from wtforms import StringField, PasswordField, BooleanField, SubmitField
from wtforms.validators import Required, Length, Email, Regexp, EqualTo
from wtforms import ValidationError
from ..models import User

class LoginForm(FlaskForm):
    email = StringField('Email', validators=[Required(), Length(1,64), Email()])
    password = PasswordField('Password', validators=[Required()])
    remember_me = BooleanField('Keep me logged in')
    submit = SubmitField('Login')

class RegistrationForm(FlaskForm):
    email = StringField('Email', validators=[Required(), Length(1, 64), Email()])
    username = StringField('Username', validators=[
        Required(), Length(1, 64), Regexp('^[A-Za-z][A-Za-z0-9_.]*$', 0,
        'Username must have only letters, numbers, dots or underscores')])
    password = PasswordField('Password', validators=[Required(),
                                EqualTo('password2', message="Password must be same.")])
    password2 = PasswordField('Confirm password', validators=[Required()])
    submit = SubmitField('Register')

    def validate_email(self, field):
        if User.query.filter_by(email=field.data).first():
            raise ValidationError('Email already registerd.')

    def validate_username(self, field):
        if User.query.filter_by(username=field.data).first():
            raise ValidationError('Username already registerd.')

class ChangePasswordForm(FlaskForm):
    old_password = StringField('Old password', validators=[Required()])
    password = StringField('New password', validators=[Required(), EqualTo('password2', 'Password must matched')])
    password2 = StringField('Confirm New password', validators=[Required()])
    submit = SubmitField('Update Password')

class PasswordResetRequestForm(FlaskForm):
    email = StringField('Email', validators=[Required(), Length(1, 64), Email()])
    submit = SubmitField('Reset Password')

class PasswordResetForm(FlaskForm):
    email = StringField('Email', validators=[Required(), Length(1, 64), Email()])
    password = StringField('New password', validators=[Required(), EqualTo('password2', 'Password must matched')])
    password2 = StringField('Confirm New password', validators=[Required()])
    submit = SubmitField('Reset Password')

    def validate_email(self, field):
        if User.query.filter_by(email=field.data).first():
            raise ValidationError(' Unknown email address')

class ChangeEmailForm(FlaskForm):
    email = StringField('New Email', validators=[Required(), Length(1, 64), Email()])
    password = StringField('password', validators=[Required(), EqualTo('password2', 'Password must matched')])
    submit = SubmitField('Update Email Address')

    def validate_email(self, field):
        if User.query.filter_by(email=field.data).first():
            raise ValidationError('Email already registered.')

